Malicious PDF — malware analysis report

Static analysis result for SHA-256 74282f46db92abd0…

MALICIOUS

PDF

88.7 KB Created: 2021-04-27 07:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 100c094c4a32cd7f89c758e8b4da9af0 SHA-1: 5fee9914a2d1409aefb2180d434c11345d2a2506 SHA-256: 74282f46db92abd0437c7151fbe7d54a3229fbd44f4a3dc2ab3019d58f2db163
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://leonvi.ru/strik?utm_term=ray+dalio+big+debt+crises+review PDF link annotation
    • http://vpntop.info/difference_between_shaping_and_chainfxjjf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412778/normal_60121cb7be473.pdfIn PDF document text
    • http://hookup755.fun/18253652018l2e1w.pdfIn PDF document text
    • http://youralteragoods.com/which_football_teams_are_sponsored_by_nikef59kl.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/afba_apk_old_versionxjgns.pdfIn PDF document text
    • http://karaulovlife.site/7300619433i8ymo.pdfIn PDF document text
    • http://characduwe.space/masons_rule_examples6a79u.pdfIn PDF document text
    • http://nncucuucuc.space/megastar_chiranjeevi_video_songs3jeqh.pdfIn PDF document text
    • http://uscovidcharts.com/snow_drift_fences_in_wyomingnshpa.pdfIn PDF document text
    • http://all-host.site/blackrock_capital_market_assumptions_2021f2t5r.pdfIn PDF document text
    • http://my-favshop.online/python_programming_for_beginners_jason_cannon_download83bo0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485569/normal_605d3945b8ffd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462035/normal_6033423cb0122.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://196cdf53-7a38-4f80-8f5e-3ad65c24f50e.filesusr.com/ugd/e5a593_665c641992be4a059da79e7f4c42992b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tutasujal/best_buy_irobot_roomba.pdfIn PDF document text
    • https://11484d69-1612-41b9-9199-165df1f08223.filesusr.com/ugd/e2f197_10ebaacf863545ab8f417069ea5bd2e5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/the_thing_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/allan_kardec_oraciones.pdfIn PDF document text
    • https://9334512a-4df1-45dc-8804-f0fa1d9e2a3d.filesusr.com/ugd/9466eb_ef3fea3d8550498294f45161e732fbf8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pobixedele/answering_phone_jobs_in_toronto.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/wimepulifumo.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/53565005300.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/surah_al_mulk_with_urdu_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/babylon_dictionary_free_english_to_persian.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA9 5508 bytes
SHA-256: dfc661a15158b63c243aad85054ad2ea17a2030bb479a1b119173ac925abf00e
font_01_sfnt_off00012e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E94 11352 bytes
SHA-256: 6f3e79e6900d30d1501dfd74e24c6e092b9a47c27f067698d854931a66633332

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